Wrench.



W. J. STOLZ.

Ptented WITNESSES:

ATTORNEYS.

WILLIAM J'. STOLZ, 0F NEW YORK, N. Y.

WRENCH.

Specification of Letters Patent.

Patented Apr. 18, 1911.

Application filed August 22, 1910. Serial No. 578,339.

To all whomtt may concern:

Be it known that I, VILLIAM J. S'roLz, a citizen of the United States,and a resident 4of the city of New York, (borough of Bronx,) in thecounty and State of New York, have invented a new and Improved Wrench,of which the following is a full, clear, and exact description.

Among the principal objects which the presenty invention has in vieware: to provide in a wrench means for extending later'- ally the workingposition of the head thereof and to provide a construction for a wrenchof the character specified which is simple, economical, eflicient anddurable.

One embodiment of the present invention is presented in the structureillustrated in the accompanying drawings, in which like characters ofreference indicate corresponding parts in all the views, and in which-Figure 1 is a section, taken on the line 1-1 in Fig. 2, of a wrenchconstructed and arranged in accordance with the present invention; Fig.2 is a side view of a wrench constructed and arranged in accordance withthe present invention, a portion of the head being cut away to show theconstruction thereof; Fig. 3 is a sectionalV view of the wrench headtaken on the line 3--3 in Fig. 1; Fig. 4t is a detailed view in sideelevation of a wrench head and extension arm employed in the presentinvention; and Fig. 5

1s a side view of an extension arm employed in conjunction with a wrenchconstructed and arranged in accordance with the present invention.

The wrench jaw 10 is provided with an extension bar 11. The bar 11 iselliptically shaped in cross section, the outer edges of the short sidesthereof being provided with threads 12, 12, circularly disposed toreceive the threads of a nut 13. The nut 13 is knurled and extendsbeyond the sides of the perforated body 14. The body 14k is integrallyformed with and extends from the jaw 15. By manipulating the nut 13 tomove the same backward and forward over the bar 11, the jaw 15 is slidto and from the 5o law l0, thus regulating the grip of the .j and l5.The jaw 10 is provided with a cirwreneh head formed by the two jaws 10cular perforation having nicks 0r recesses formed in the side thereof,as shown best in Fig. 2 of the drawings. The perforation and nicks arethus provided in the head 10 to receive the stud extension 16 which isadjustably formed with the ratchet plate 17 employed for manipulatingthe wrench. The sides of the stud extension 1G are provided with ribs18, 18, fitting within the nicks provided in the side of the perforationformed in the jaw 10. The plate 17 is provided with a series oftruncated teeth 19, as best shown in Figs. 3 and 4 of the drawings. Theplate 17 is provided with a head extension 20, which extension isprovided to receive in pivotal relation the ring end 21 of the handle22. The ring end 21 is held in position upon the plate 17 by means of adisk 23. The disk 23 is fxedly secured upon the head 20 by means ofsuitable fastening devices, the screws 24, 24, shown in the drawings asat Fig. 1 thereof, being by me a preferred form of fastening.

The plate 17 and the stud extension 1G extended therefrom and the jaw 10thereon are rotated by the handle 22 when the same is engaged with thesaid plate 17 by means of a pawl 25. The pawl 25 is best shown in Fig. 3of the drawings. The said pawl extends between the truncated teeth 19 ofthe plate 17, to impinge upon and engage the same. The pawl 25 isslidably mounted in the chamber of a boss 2G. The pawl 25 is preferablyconnected with a guide rod 27, having mounted rigidly on the end thereofa milled nut 28. Snrrounding the rod 27 and arranged to normally extendthe said rod of the pawl 25 is a spiral spring 29. By means of theconstruction, above described, of the pawl 25 and mounting therefor, thepawl may be reversed so that the square face thereof may be disposedwith reference to the teeth 19 to impinge in one direction and avoid inthe other at will, so that the operator may alternately use the wrenchfor turning to the right or to the left, as the case may be.

In Fig. 5 of the drawings is shown an extension bar 30. The bar isprovided at one end with a stud extension 31 corresponding in allrespects with the extension 16, and being provided with ribs 32, 32,similar in shape and size to the ribs 18, 18. At the other extremity ofthe bar 30 is provided a head 33. The head 33 is provided with a socketcorresponding in its internal shape and size to the perforation formedin the head 10, thereby being adapted to extend over and fit the studextension 16 in the same manner as does the said head or aw 10.-

The wrench may be provided with a number of extension bars 30, eachhaving a length different from the other'. r1he jaw 10 and partsconnected therewith and the bars 30 are each provided with a pin 34,whereby the bars and jaws are held in position. The pins 34 are eachprovided with cross bars 35 and a link 36 secured to the head of thesaid pin to receive chains 37 by which said pins are secured to the saidbars 30 or the aw 10. The pins 34 are extended through perforations 38.The perforations 38 are provided with extensions 39, 39, similar to theextensions for the wards of a key in the scutcheon plate of a lock. Theextensions 39, 39 are provided in the present instance to pass the bar35. The lower end of the shank of the pin 34 is extended intothe centerof a bored hole 4() which is provided with an annular groove 4-1, thediameter of which exceeds the length of the bar 35 and the depth ofwhichexceeds the thickness of the said bar 35. By means of this arrangementwhen the pin 34 is extended through the perforation 38 the bar 35 may beturned crosswise of the extensions 39, 39 and the pin 34 be therebylocked in its position whereby it retains the bar 30 or the jaw 10 inposition upon the stud 1G.

1t will be observed that when the rod 30 is employed the head 10 isdisposed over the stud extension 31, to which it is locked in a mannersimilar to that just described with reference to the hole 40 and the pin34. r1`he stud extension 31 is for this purpose provided with a hole 42and the groove 43, being in all respects similar to the hole 40 and thegroove 41.

It will be understood that if desired a plurality of rods 30 could beused to extend laterally the position of the jaws 1G and 15. Thisarrangement facilitates the operation for which the present invention isparticularly designed, to wit, to tighten the bolts or nuts located atthe bottom of the recesses or other structural depressions wherein thehandle 22 would not have space to move.

In its operation the nut 13 is manipulated to advance the jaw 15 towardthe jaw 10, which is relatively stationary during the adjustment. Thejaws having been adjusted to a grip upon the nut or bolt, the same istightened or screwed up by swinging the handle 22 in a manner similar toratchet wrenches or other ratchet operated tools.

It will be observed that by turning the ratchet 25, the tooth may bemade-to engage the plate 17, to move the same in either the right or theleft rotary direction and that at the will of the operator.

When in the course of the operation it is found that the wrench head,formed by the jaws 10 and 15, does not reach to the recess wherein islocated the bolt or nut, one or more of the bars 30 are installed bybeing placed upon the stud 16, or coupled one upon the other. t eachcoupling the pins 34 are inserted within the perforations 38 and turned,so that the course of the bar 35 on each pin extends transverse of theextensions 39, 39 and are thereby prevented fromi retracting from theirengaged position.

' Having thus described my invention, I claim as new and desire tosecure by Letters Patent 1. A wrench comprising a fixed jaw memberhaving an integrally connected adjusting bar disposed perpendicular tothe gripping face of said jaw member, said bar being provided with ascrew thread; a movable jaw member' slidably mounted on said bar; ascrew nut holdingly engaging said movable jaw member and operativelyengaging the screw threads of said bar to adjust said movable jaw memberon said bar; a removable extension rod adapted to be iixedly connectedto one of said jaw members and extended from the side thereof in a lineparallel with the gripping face of said jaw member; and a lever handleholdingly engaging said rod and extended at an angle therefrom.

2. 1n combination, a wrench havingV er-`\ pansible aw members and meansfor adjusting the same, one of said jaw members being provided with anelongated socket extended in parallel relation with the gripping face ofsaid wrench; al lever handley having a ratchet head; a connecting memberattached to said ratchet head adapted for insertion in said socket insaid aw member; a connecting rod shaped at one end for insertion in saidsocket in said jaw member and provided at the opposite end with a socketto receive said extension on said ratchet head; and locking means forsecuring said connecting rod toboth said jaw member and said ratchethead.

in testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

VVILLAM J. S'TOLZ.

lfiitnesses:

FLORENCE S'roLz, Josuri-I Dommia.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

